Mouthguard



FIG. 1 is a perspective view of the mouthguard embodying my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof, the left side elevational view being a mirror image thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

In the drawings, the broken lines in FIGS. 1, 2 and 5, depict portions of the design that form no part of the claim. 

The ornamental design for a mouthguard, as shown and described. 